diff --git a/hts/OrderChecker.py b/hts/OrderChecker.py
index 9d064a6..23f089b 100644
--- a/hts/OrderChecker.py
+++ b/hts/OrderChecker.py
@@ -18,7 +18,8 @@ class OrderChecker:
         else:
             order_df = pd.DataFrame(columns=["stock_code", "type", "orderNum", "count", "price", "datetime"])
 
-        #order_df = order_df.astype({"stock_code": str, "type": str, "orderNum": int, "count": int, "price": int})
+        order_df = order_df.astype({"stock_code": str, "type": str, "orderNum": int, "count": int, "price": int})
+        order_df.drop(['Unnamed: 0'], axis=1, inplace=True)
         order_df['datetime'] = pd.to_datetime(order_df['datetime'])
         return order_df
 
@@ -88,14 +89,22 @@ if __name__ == "__main__":
     a['datetime'] = pd.to_datetime(a['datetime'])
 
     this_time = datetime.now()
-    a = a.append({"type": "0", "orderNum": 1, "count": 3, "price": 7, "datetime": this_time}, ignore_index=True)
-    a = a.append({"type": "1", "orderNum": 3, "count": 0, "price": 6, "datetime": this_time - timedelta(hours=2)}, ignore_index=True)
-    a = a.append({"type": "2", "orderNum": 3, "count": 0, "price": 3, "datetime": this_time + timedelta(hours=1)}, ignore_index=True)
-    a = a.append({"type": "1", "orderNum": 9, "count": 9, "price": 8, "datetime": this_time}, ignore_index=True)
+    a = a.append({"stock_code": "a", "type": "0", "orderNum": 1, "count": 3, "price": 7, "datetime": this_time}, ignore_index=True)
+    a = a.append({"stock_code": "a", "type": "1", "orderNum": 3, "count": 0, "price": 6, "datetime": this_time - timedelta(hours=2)}, ignore_index=True)
+    a = a.append({"stock_code": "a", "type": "2", "orderNum": 3, "count": 0, "price": 3, "datetime": this_time + timedelta(hours=1)}, ignore_index=True)
+    a = a.append({"stock_code": "a", "type": "1", "orderNum": 9, "count": 9, "price": 8, "datetime": this_time}, ignore_index=True)
 
     b = a.loc[a["orderNum"] != 3]
     print(b.tail())
     print()
 
     b = a.loc[a["datetime"] < this_time]
-    print(b.tail())
\ No newline at end of file
+    print(b.tail())
+
+    a.to_csv("test.csv")
+    a = pd.read_csv("test.csv")
+    a.drop(['Unnamed: 0'], axis=1, inplace=True)
+    a = a.astype({"stock_code": str, "type": str, "orderNum": int, "count": int, "price": int})
+    a['datetime'] = pd.to_datetime(a['datetime'])
+
+    print("done")
\ No newline at end of file